The vans are illegal.
Fourth Amendment wrote:
The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.
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Wherever they burn books they will also, in the end, burn human beings. ~Heinrich Heine, Almansor, 1823
?I wouldn't recommend sex, drugs or insanity for everyone, but they've always worked for me.? - Hunter S. Thompson